What do Archipelo and Mimecast sell?

Archipelo sells Salmon. Mimecast sells Managed Threat Response.

Are Archipelo and Mimecast in the same category?

They share Insider risk management. Archipelo's primary category is Software supply chain security and Mimecast's is Email security.

Where are Archipelo and Mimecast headquartered?

Mimecast is headquartered in London, United Kingdom.

Who owns Archipelo and Mimecast?

Mimecast is owned by Permira, since 2022.

Who are Archipelo and Mimecast sold to?

From its own pages, Archipelo's Salmon addresses software in which autonomous agents, tools, runtimes, and controllers perform consequential actions. From its own pages, Mimecast sells mainly to organizations that want to reduce risk caused by human actions across email, chat and file-sharing.

What have Archipelo and Mimecast announced recently?

June 25, 2026: Mimecast appointed Ranjan Singh as its Chief Executive Officer.

Vendor comparison · 2 companies

Archipelo vs Mimecast

Archipelo develops Salmon, Execution Verification Infrastructure for establishing cryptographically verifiable execution history and state lineage. Mimecast describes the problem it addresses as human risk. CISO Tribune files both under Insider risk management. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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Archipelo vs Mimecast: Products, Customers and Funding Compared
What it sells
	ArchipeloArchipelo develops Salmon, Execution Verification Infrastructure for establishing cryptographically verifiable execution history and state lineage.archipelo.com	MimecastMimecast describes the problem it addresses as human risk.mimecast.com
What it sells	Salmon^{[1][2][3][4][5]}Execution Verification Infrastructure for establishing cryptographically verifiable execution history and state lineage.	Managed Threat Response^[8]24x7 analyst response to every user-reported email.
Categories
Categories	Software supply chain security (primary category) AI model and agent security Insider risk management	Email security (primary category) Email authentication and DMARC Collaboration app security Insider risk management
Headquarters
Headquarters	Not stated on its pages	London, United Kingdom^[1]
Founded
Founded	Not stated on its pages	2003^[1][6]
Ownership and funding
Ownership and funding	Not stated on its pages	Owned by Permira since 2022^{[3][4][8][13][14][19]}
Named customers
Named customers	Not stated on its pages	Not stated on its pages
Recent news
Recent news	Not stated on its pages	June 25, 2026Mimecast appointed Ranjan Singh as its Chief Executive Officer.^[12]
G2 and Gartner Peer Insights
G2 and Gartner Peer Insights	G2: Not stated on its pages Gartner Peer Insights: Not stated on its pages	G2: listed, seen November 4, 2026^[13] Gartner Peer Insights: listed, seen November 4, 2026^[19]
Who it fits
Who it fits	From its own pages, Archipelo's Salmon addresses software in which autonomous agents, tools, runtimes, and controllers perform consequential actions. Archipelo describes incident investigation teams as needing to work backward from a consequential state change toward the execution associated with it. Archipelo names systems that investigate, evaluate, govern, and depend upon execution as the systems for which verifiable execution history matters.	From its own pages, Mimecast sells mainly to organizations that want to reduce risk caused by human actions across email, chat and file-sharing. Its pages say its plans are designed for businesses of all sizes, and its customer stories cover both small and medium businesses and enterprises. Mimecast says Incydr offers FedRAMP-authorized solutions suited to government agencies and contractors. It describes Cloud Archive as helping IT, Legal, Compliance and HR teams respond to legal inquiries or compliance audits. Its pages also point to security teams that handle user-reported email and insider risk.
Last verified
Last verified	September 30, 2026	September 27, 2026

Where they overlap

Archipelo and Mimecast are both filed under Insider risk management.

Where they differ, field by field

Archipelo's primary category is Software supply chain security; Mimecast's is Email security.
Archipelo is also filed under AI model and agent security. Mimecast is also filed under Email authentication and DMARC and Collaboration app security.
Archipelo lists Salmon. Mimecast lists Managed Threat Response.
Mimecast is headquartered in London, United Kingdom.
Mimecast was founded in 2003.
Mimecast is owned by Permira, since 2022.

What it sells: Archipelo

What Salmon does^{[1][2][3][4][5]}: Salmon is Execution Verification Infrastructure for establishing cryptographically verifiable execution history and state lineage. Execution is represented as a cryptographically signed event with explicit context. Salmon captures execution as it occurs upstream within supported environments.

What it sells: Mimecast

What Managed Threat Response does^[8]: Mimecast Managed Threat Response has analysts investigate, classify and remediate each email users report. It works with the existing report button.

Questions about Archipelo and Mimecast

What do Archipelo and Mimecast sell?: Archipelo sells Salmon. Mimecast sells Managed Threat Response.
Are Archipelo and Mimecast in the same category?: They share Insider risk management. Archipelo's primary category is Software supply chain security and Mimecast's is Email security.
Where are Archipelo and Mimecast headquartered?: Mimecast is headquartered in London, United Kingdom.
When were Archipelo and Mimecast founded?: Mimecast was founded in 2003.
Who owns Archipelo and Mimecast?: Mimecast is owned by Permira, since 2022.
Who are Archipelo and Mimecast sold to?: From its own pages, Archipelo's Salmon addresses software in which autonomous agents, tools, runtimes, and controllers perform consequential actions. From its own pages, Mimecast sells mainly to organizations that want to reduce risk caused by human actions across email, chat and file-sharing.
What have Archipelo and Mimecast announced recently?: June 25, 2026: Mimecast appointed Ranjan Singh as its Chief Executive Officer.

About Archipelo

Archipelo develops Salmon, Execution Verification Infrastructure for establishing cryptographically verifiable execution history and state lineage. Archipelo builds Salmon for autonomous multi-actor software systems. Archipelo, Inc. is the company developing and stewarding Salmon.^[1][3][4][5]

Archipelo states that autonomous agents, tools, runtimes, and controllers increasingly perform consequential actions themselves. Archipelo states that the resulting state alone cannot show which execution occurred, in what order, or how each state transition derived from the ones before it. Archipelo develops infrastructure that makes autonomous multi-actor software execution independently verifiable. Archipelo states that safe and reliable agents need verifiable evidence of their execution history.^[4][5]

Archipelo points to Git as showing the value of persistent, linked source code history. Archipelo says Execution Verification Infrastructure addresses a different problem, which is establishing a verifiable record of state transitions and the resulting state.

Archipelo describes execution as represented by a cryptographically signed event with explicit context. Archipelo states that Salmon captures execution as it occurs upstream within supported environments, not downstream after the event has already taken place. Archipelo states that Salmon does not visually or structurally manufacture execution continuity when execution continuity has not been established.

Archipelo states that agent generated changes can involve delegated execution, tools, subprocesses and multiple state transitions. Archipelo states that execution history provides a durable record of supported execution relationships to verify outcomes. Archipelo states that during incident investigation, teams need to work backward from a consequential state change toward the execution associated with it, to determine what caused the outcome.

One principle is that downstream systems should not be forced to establish execution history solely through retrospective inference where it can be captured during supported execution. Archipelo states that what an actor was permitted or instructed to do is distinct from what it actually executed. Archipelo states that machine-speed software systems require execution evidence that other software systems can consume and verify. Archipelo describes identity, policy, observability, security, engineering, and governance systems as solving adjacent problems.^[5]

Archipelo describes itself as a deep tech company building foundational infrastructure for verifiable autonomous systems.^[1][3][4][5]

Archipelo on the record

About Mimecast

Mimecast describes the problem it addresses as human risk. Its solutions page says Mimecast offers a unified and dynamic solution to rapidly identify and reduce risk caused by human actions and to empower users to make smarter security decisions. Mimecast says a unified platform with integrated protection across email, chat and file-sharing is essential to safeguard an organization's collaboration.^[2][5][15]

For email and collaboration threat protection, Mimecast says its solution blocks phishing, BEC, impersonation, malware and collaboration-based attacks using adaptive AI across email, Teams, Slack and more.^[2][11][16]

Mimecast Managed Threat Response is a managed service for emails that users report. Mimecast says each report is analyst-investigated, classified and remediated 24x7. Mimecast says the service works with the existing report button and that API outputs route to a SIEM, SOAR or case management platform.

For insider risk, Mimecast Incydr is the data protection product. Mimecast says Incydr brings email, endpoint, cloud, browser and agentic risk surfaces into one view, scored for risk and tied back to people. Mimecast says Incydr offers adaptive controls that range from in-the-moment education to allow-with-justification to targeted blocking. The Agent Risk Center, part of Mimecast Incydr, discovers the agents operating in an environment, classifies their AI activity against the customer's rules, and applies controls to reduce data exposure. Mimecast says Incydr offers data residency options and FedRAMP-authorized solutions, and that an ultra-lightweight agent supports Windows, Mac and Linux.^[2][9][18]

For security behavior management, Mimecast Engage delivers behavior-driven interventions powered by the Human Risk Command Center. Mimecast says Engage can deliver nudges via email, Slack or Teams, and that it offers 200+ training modules available in 27 languages. Mimecast says Engage connects with security tools such as CrowdStrike, Okta and Netskope.^[2][7]

For archiving, Mimecast Cloud Archive provides self-service tools to collect, discover, preserve and review collaboration data. Mimecast says Supervision supports review, escalation, export and reporting, Sync & Recover protects files, folders, contacts, tasks and notes, and Archive for MS Teams keeps encrypted copies of Teams data.^[9]

Mimecast says it protects and supports 42,000+ organizations globally and has done so since 2003. Its pages say it offers 300+ integrations.^{[2][9][10][11][17][18]}

Mimecast on the record

Sources

Archipelo full record

[1]archipelo.comArchipelo · archipelo.com · undated page, accessed September 30, 2026 · Tier A
[2]Archipelo - Making Autonomous Software Execution VerifiableArchipelo · undated page, accessed October 30, 2026 · Tier A
[3]Terms of Service — SalmonArchipelo, Inc. · published September 20, 2026 · Tier A
[4]Archipelo - This page has been retiredArchipelo · undated page, accessed October 30, 2026 · Tier A
[5]About — SalmonArchipelo · undated page, accessed November 10, 2026 · Tier A

Mimecast full record

[1]CompanyMimecast · mimecast.com · undated page, accessed September 27, 2026 · Tier A
[2]ProductsMimecast · mimecast.com · undated page, accessed September 27, 2026 · Tier A
[3]Permira completes acquisition of mimecastPermira · permira.com · published May 17, 2022 · Tier A
[4]Human Risk Management & Advanced Email Security | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[5]Advanced Email Security | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[6]Mimecast Incydr | See & Stop Data Loss From Insiders | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[7]Security Awareness Training | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[8]Email Incident Response Service | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[9]Email Archive | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[10]Aware | Keep Collaboration Secure & Compliant | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[11]Cybersecurity Products and Services | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
[12]Mimecast Appoints Ranjan Singh as Chief Executive OfficerGlobeNewswire · published June 25, 2026 · Tier A
[13]Mimecast Advanced Email Security Reviews & Product Details - G2G2 · undated page, accessed October 26, 2026 · Tier C
[14]Mimecast Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 26, 2026 · Tier C
[15]Cyber Security Solutions | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
[16]Email & Collaboration Threat Protection | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
[17]Collaboration Threat Protection | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
[18]Mimecast Plans | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
[19]Mimecast Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed November 4, 2026 · Tier C

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